Which ordered pair is a solution to the system of linear equation 2x+3y=6 -3x+5y=10

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

Asocial networking site currently has 400,000 active members, and that figure is predicted to increase by 32% each year. the following expression represents the number of active members on the site after t years.

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.